Table 1. HIV prevalence at screening and associations with socio-demographic and sexual behaviour characteristics, among women working in food and recreational facilities in northern Tanzania.
| Factor | N (column %) [1] | HIV prevalence,row % | Town- and age-adjustedOR (95% CI) [2] | Adjusted OR(95% CI) [2], [3] |
| Overall | 2229 (100%) | 16.10% | – | – |
| Town | P = 0.04 | P = 0.12 | ||
| Geita | 639 (29%) | 13.50% | 1 (reference) | 1 (reference) |
| Kahama | 506 (23%) | 18.80% | 1.44 (1.04,1.99) | 1.46 (1.05,2.04) |
| Shinyanga | 520 (23%) | 18.30% | 1.18 (0.85,1.64) | 1.33 (0.95,1.87) |
| Moshi | 564 (25%) | 14.50% | 0.92 (0.66,1.28) | 1.15 (0.80,1.66) |
| Type of job | P<0.001 | P<0.001 | ||
| Waitress | 1047 (47%) | 19.60% | 1 (reference) | 1 (reference) |
| Mamalishe | 312 (14%) | 9.60% | 0.32 (0.21,0.48) | 0.37 (0.24,0.56) |
| Other staff | 870 (39%) | 14.10% | 0.52 (0.40,0.67) | 0.59 (0.45,0.77) |
| Age, years | P<0.001 | P<0.001 | ||
| <20 | 200 (9%) | 7.00% | 1 (reference) | 1 (reference) |
| 20–24 | 676 (30%) | 8.90% | 1.30 (0.71,2.38) | 1.23 (0.66,2.29) |
| 25–29 | 539 (24%) | 18.70% | 3.06 (1.70,5.50) | 3.06 (1.65,5.68) |
| ≥30 | 814 (37%) | 22.50% | 3.94 (2.22,6.98) | 4.61 (2.47,8.60) |
| Highest formal education | P<0.001 | P<0.001 | ||
| None/incomplete primary | 608 (27%) | 19.40% | 1 (reference) | 1 (reference) |
| Complete primary | 1273 (57%) | 16.90% | 0.75 (0.58,0.98) | 0.73 (0.56,0.96) |
| ≥Secondary | 347 (16%) | 7.20% | 0.33 (0.21,0.52) | 0.34 (0.21,0.54) |
| Religion | P = 0.87 | P = 0.88 | ||
| Christian | 1640 (74%) | 16.20% | 1 (reference) | 1 (reference) |
| Muslim | 573 (26%) | 15.50% | 0.95 (0.72,1.23) | 0.95 (0.72,1.25) |
| None | 13 (1%) | 15.40% | 1.29 (0.27,6.16) | 0.75 (0.16,3.59) |
| Marital status | P<0.001 | P<0.001 | ||
| Married | 507 (23%) | 10.30% | 1 (reference) | 1 (reference) |
| Separated/divorced/widowed | 985 (44%) | 22.50% | 2.76 (1.98,3.86) | 2.20 (1.56,3.10) |
| Single | 736 (33%) | 11.40% | 2.01 (1.34,2.99) | 1.78 (1.18,2.69) |
| N sex partners in last 3 months | P = 0.004 | P = 0.19 | ||
| 0 | 119 (5%) | 14.30% | 1 (reference) | 1 (reference) |
| 1 | 1362 (62%) | 15.60% | 1.21 (0.70,2.10) | 1.31 (0.74,2.31) |
| 2 | 380 (17%) | 14.70% | 1.30 (0.71,2.37) | 1.06 (0.57,1.97) |
| ≥3 | 328 (15%) | 21.30% | 2.20 (1.21,4.01) | 1.59 (0.85,2.98) |
OR = odds ratio, CI = confidence interval. Includes only those women whose HIV status is known at screening (85% of cohort). [1] Numbers may not add up to total due to missing data. [2] P-values from likelihood ratio test. The ORs for town are adjusted for age, and the ORs for age are adjusted for town. [3] Estimated ORs adjusted by town, age, type of job, education and marital status (the adjusted results for these variables are shown in bold).